Boiler Control Instruction & Operation Manual
Page 4
7
of
68
Setup & Tuning
Press
Fan Tuning
within the Tune menu to adjust the following parameters
Factory
Setting
Range /
Choices
Parameter and Description
500
rpm/sec.
0 to 12000
Fan Speed-Up Ramp
Whenever the burner is firing it will be commanded to increase its RPM no faster
than the rate provided by this parameter. This is a maximum speed limit.
500
rpm/sec.
0 to 12000
Fan Speed-Down Ramp
Whenever the burner is firing it will be commanded to decrease its RPM no faster
than the rate provided by this parameter.
15
1 to 100
Fan Gain Up
This is the gain for speeding up the fan.
8
1 to 100
Fan Gain Down
This is the gain for slowing down the fan.
Disabled
Enable
Disable
CH Slow Start Enable/Disable
This parameter enables or disables the slow start limit function for Central Heat and
Sequence Master demand sources. It uses the CH Low Fire Hold Rate parameter
as the starting point for the slow start.
Disabled
Enable
Disable
DHW Slow Start Enable/Disable
This parameter enables or disables the slow start limit function for DHW demand
source. It uses the DHW Low Fire Hold Rate parameter as the starting point for the
slow start.
20
degrees
0 to 180
Slow Start Degrees
If slow start limiting is enabled and the supply temperature is less than the
temperature provided by subtracting this number of degrees from the setpoint, then
slow start rate limiting is effective. W henever the supply temperature is above this
value, slow start limiting has no effect.
200
%/min.
0 to 1000
Slow Start Ramp
When slow start limiting is in effect, the modulation rate will increase no more than
the amount per minute given by this parameter. Although provided as a per-minute
value, the Control will calculate and apply this as a stepped function using step
duration of 10 seconds.
